6563091 has 4 divisors (see below), whose sum is σ = 8750792. Its totient is φ = 4375392.

The previous prime is 6563087. The next prime is 6563093. The reversal of 6563091 is 1903656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6563091 - 2² = 6563087 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6563093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093846 + ... + 1093851.

It is an arithmetic number, because the mean of its divisors is an integer number (2187698).

Almost surely, 2^6563091 is an apocalyptic number.

6563091 is a deficient number, since it is larger than the sum of its proper divisors (2187701).

6563091 is a wasteful number, since it uses less digits than its factorization.

6563091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187700.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 6563091 is about 2561.8530402816. The cubic root of 6563091 is about 187.2274297322.

The spelling of 6563091 in words is "six million, five hundred sixty-three thousand, ninety-one".